Display device

Abstract

A display device includes: a substrate; a flattened layer; at least one first light-emitting element; at least one second light-emitting element; at least one first drive circuit; and at least one second drive circuit, wherein light emitted by the first light-emitting element is taken out through the substrate, light emitted by the second light-emitting element is taken out from a direction opposite to a direction in which the light emitted by the first light-emitting element is taken out, the first light-emitting element is provided in an opening provided in the flattened layer, the second light-emitting element is provided in a layer above the flattened layer and overlaps the flattened layer, and the first drive circuit and the second drive circuit are provided closer to the substrate than the second light-emitting element.

The invention claimed is: 
     
       1. A display device comprising:
 a substrate; 
 a flattened layer formed on one side of the substrate; 
 at least one first light-emitting element; 
 at least one second light-emitting element; 
 at least one first drive circuit configured to control a light emission intensity of the at least one first light-emitting element; and 
 at least one second drive circuit configured to control a light emission intensity of the at least one second light-emitting element, 
 wherein light emitted by the at least one first light-emitting element is emitted out through the substrate, 
 light emitted by the at least one second light-emitting element is emitted out from a direction opposite a direction in which the light emitted by the at least one first light-emitting element is emitted out, 
 the at least one first light-emitting element is provided in an opening provided in the flattened layer, 
 the at least one second light-emitting element is provided in a layer above the flattened layer and overlaps the flattened layer, 
 the at least one first drive circuit and the at least one second drive circuit are provided closer to the substrate than to the at least one second light-emitting element, 
 the at least one first light-emitting element includes a first pixel electrode having an island shape, a first light-emitting layer, and a first common electrode in this order from a substrate side, 
 the at least one second light-emitting element includes a second pixel electrode having an island shape, a second light-emitting layer, and a second common electrode in this order from the substrate side, 
 the at least one first light-emitting element further includes a first light blocking member on a side of the first light-emitting layer opposite a substrate side of the first light-emitting layer, 
 the at least one second light-emitting element further includes a second light blocking member on a substrate side of the second light-emitting layer, 
 the at least one first light-emitting element comprises a plurality of first light-emitting elements, 
 the at least one second light-emitting element comprises a plurality of second light-emitting elements, 
 the at least one first drive circuit comprises a plurality of first drive circuits, 
 the at least one second drive circuit comprises a plurality of second drive circuits, 
 the plurality of first light-emitting elements is provided in a plurality of openings, including the opening, provided in the flattened layer, respectively, 
 the plurality of second light-emitting elements is provided in the layer above the flattened layer and overlaps the flattened layer, 
 the plurality of first drive circuits and the plurality of second drive circuits are provided closer to the substrate than to the plurality of second light-emitting elements, 
 the plurality of first light-emitting elements includes a first red light-emitting element including a red light-emitting layer as the first light-emitting layer, a first green light-emitting element including a green light-emitting layer as the first light-emitting layer, and a first blue light-emitting element including a blue light-emitting layer as the first light-emitting layer, 
 the plurality of second light-emitting elements include a second red light-emitting element including a red light-emitting layer as the second light-emitting layer, a second green light-emitting element including a green light-emitting layer as the second light-emitting layer, and a second blue light-emitting element including a blue light-emitting layer as the second light-emitting layer, 
 a first light-emitting region including the first red light-emitting element, the second red light-emitting element, the second green light-emitting element, and the second blue light-emitting element, a second light-emitting region including the first green light-emitting element, the second red light-emitting element, the second green light-emitting element, and the second blue light-emitting element, and a third light-emitting region including the first blue light-emitting element, the second red light-emitting element, the second green light-emitting element, and the second blue light-emitting element, are arranged adjacent to each other in a first direction that is an extending direction of a gate signal line, 
 the first red light-emitting element, the first green light-emitting element, and the first blue light-emitting element are one display unit of light emitted out through the substrate, 
 the second red light-emitting element, the second green light-emitting element, and the second blue light-emitting element in each of the first light-emitting region, the second light-emitting region, and the third light-emitting region are one display unit of light emitted out from the direction opposite the direction in which the light emitted by the first light-emitting element is emitted out, 
 in the first light-emitting region, the first red light-emitting element and a light-emitting element having a specific color selected from the second red light-emitting element, the second green light-emitting element, and the second blue light-emitting element, are arranged adjacent to each other in a second direction orthogonal to the first direction, 
 in the second light-emitting region, the first green light-emitting element and the light-emitting element having the specific color are arranged adjacent to each other in the second direction, 
 in the third light-emitting region, the first blue light-emitting element and the light-emitting element having the specific color are arranged adjacent to each other in the second direction, 
 a plurality of first light-emitting regions, including the first light-emitting region, a plurality of second light-emitting regions, including the second light-emitting region, and a plurality of third light-emitting regions, including third light-emitting region, are each arranged linearly along the second direction, and 
 among the plurality of first light-emitting elements, two first light-emitting elements including light-emitting layers having the same color and adjacent to each other in the second direction are provided in one of the plurality of openings provided in the flattened layer. 
 
     
     
       2. The display device according to  claim 1 ,
 wherein the first common electrode and the second common electrode are made of an optical transparent conductor formed of the same material in the same layer. 
 
     
     
       3. The display device according to  claim 1 ,
 wherein the first common electrode and the second common electrode are electrically connected to each other. 
 
     
     
       4. The display device according to  claim 1 ,
 wherein the first pixel electrode and the second pixel electrode are made of an optical transparent conductor formed of the same material in the same layer. 
 
     
     
       5. The display device according to  claim 1 ,
 wherein the at least one first light-emitting element further includes a first reflective electrode, 
 the first light blocking member is made of a conductor, and 
 the first reflective electrode is an electrode formed by layering the first light blocking member and the first common electrode. 
 
     
     
       6. The display device according to  claim 1 ,
 wherein the at least one second light-emitting element further includes a second reflective electrode, 
 the second light blocking member is made of a conductor, and 
 the second reflective electrode is an electrode formed by layering the second light blocking member and the second pixel electrode. 
 
     
     
       7. The display device according to  claim 1 ,
 wherein the first light blocking member is made of a conductor, and 
 the first common electrode is the first light blocking member. 
 
     
     
       8. The display device according to  claim 1 ,
 wherein the second light blocking member is made of a conductor, and 
 the second pixel electrode is the second light blocking member. 
 
     
     
       9. The display device according to  claim 1 , further comprising:
 a first edge cover overlapping an edge portion of the first pixel electrode, 
 wherein the first edge cover has a first opening that overlaps the first pixel electrode, and 
 an edge of the first opening is located inside an edge of the opening in the flattened layer. 
 
     
     
       10. The display device according to  claim 1 , further comprising:
 a second edge cover overlapping an edge portion of the second pixel electrode, 
 wherein the second edge cover has a second opening that overlaps the second pixel electrode, and 
 an edge of the second opening overlaps the flattened layer. 
 
     
     
       11. The display device according to  claim 1 , further comprising:
 a first edge cover overlapping an edge portion of the first pixel electrode; and 
 a second edge cover overlapping an edge portion of the second pixel electrode, 
 wherein the first edge cover and the second edge cover are one edge cover layer formed of the same material in the same layer. 
 
     
     
       12. The display device according to  claim 1 , further comprising:
 a first edge cover overlapping an edge portion of the first pixel electrode, 
 wherein the first edge cover has a first opening that overlaps the first pixel electrode, and 
 the first light blocking member completely overlaps at least the first opening. 
 
     
     
       13. A display device comprising:
 a substrate; 
 a flattened layer formed on one side of the substrate; 
 at least one first light-emitting element; 
 at least one second light-emitting element; 
 at least one first drive circuit configured to control a light emission intensity of the at least one first light-emitting element; 
 at least one second drive circuit configured to control a light emission intensity of the at least one second light-emitting element; and 
 a color conversion layer provided on a side of the substrate opposite a surface on which the flattened layer is formed, 
 wherein light emitted by the at least one first light-emitting element is emitted out through the substrate, 
 light emitted by the at least one second light-emitting element is emitted out from a direction opposite a direction in which the light emitted by the at least one first light-emitting element is emitted out, 
 the at least one first light-emitting element is provided in an opening provided in the flattened layer, 
 the at least one second light-emitting element is provided in a layer above the flattened layer and overlaps the flattened layer, 
 the at least one first drive circuit and the at least one second drive circuit are provided closer to the substrate than to the at least one second light-emitting element, 
 the at least one first light-emitting element comprises a plurality of first light-emitting elements, 
 each of the plurality of first light-emitting elements emits light in the same wavelength range, and 
 the color conversion layer is configured to convert a color of light emitted by one or more of the plurality of first light-emitting elements and to emit out at least two different colors of light from the light emitted by each of the plurality of first light-emitting elements. 
 
     
     
       14. The display device according to  claim 1 ,
 wherein a size of a light-emitting region in the at least one first light-emitting element is smaller than a size of a light-emitting region in the at least one second light-emitting element. 
 
     
     
       15. The display device according to  claim 13 ,
 wherein the at least one first light-emitting element includes a first pixel electrode having an island shape, a first light-emitting layer, and a first common electrode in this order from a substrate side, 
 the at least one second light-emitting element includes a second pixel electrode having an island shape, a second light-emitting layer, and a second common electrode in this order from the substrate side, 
 the at least one first light-emitting element further includes a first light blocking member on a side of the first light-emitting layer opposite a substrate side of the first light-emitting layer, and 
 the at least one second light-emitting element further includes a second light blocking member on a substrate side of the second light-emitting layer. 
 
     
     
       16. The display device according to  claim 15 ,
 wherein the first common electrode and the second common electrode are made of an optical transparent conductor formed of the same material in the same layer. 
 
     
     
       17. The display device according to  claim 15 ,
 wherein the first common electrode and the second common electrode are electrically connected to each other. 
 
     
     
       18. The display device according to  claim 15 ,
 wherein the first pixel electrode and the second pixel electrode are made of an optical transparent conductor formed of the same material in the same layer. 
 
     
     
       19. The display device according to  claim 15 ,
 wherein the at least one first light-emitting element further includes a first reflective electrode, 
 the first light blocking member is made of a conductor, and 
 the first reflective electrode is an electrode formed by layering the first light blocking member and the first common electrode. 
 
     
     
       20. The display device according to  claim 15 ,
 wherein the at least one second light-emitting element further includes a second reflective electrode, 
 the second light blocking member is made of a conductor, and 
 the second reflective electrode is an electrode formed by layering the second light blocking member and the second pixel electrode.